The war in Ukraine is entering its second year, and President Joe Biden doubled down on his continued support for Ukraine in a recent surprise visit to Kyiv. But Russian President Vladimir Putin is also pushing ahead, and pledging not to back down.

What does the war represent for America and for the world? Foreign policy experts weighed in on Greater Boston.

Emily Channell-Justice, director of the Temerty Contemporary Ukraine Program at Harvard University, said the war represents world order. "This is about whether or not we want to live in a world where people like Vladimir Putin call the shots."

Channell-Justice said the war in Ukraine isn't the first time Russia has exercised control over a country.

But Joshua Shifrinson, associate professor at the University of Maryland's School of Public Policy, said the war is more about freedom. "This is not a question for the needs for international order, nor is it a question about the unviability of territorial boundaries. This is a contest, tragically, about whether Ukraine was to be subservient to Russia."

Shifrinson said Biden has repeated the same messaging about Ukraine, and it might not be enough to mobilize continued support from Congress.

Watch: Biden and Putin strengthen their resolve, as war in Ukraine enters second year